LabVIEW
Error out: VISA write
(What I'm trying to do is, scan the laser frequency, and use power meter to read the power of each frequency).
the Prologix GPIB-USB is connected with an Anritsu power meter ML9001A.
The Laview code of power meter is downloaded from Anritsu website. I put the code of laser scan and powermter_ReadMeasurement together. However, there is Error Out in VISA write every time.
Then I guess maybe I need to initialize the power meter. So I added VISA open and serial port configure. but there is still error out.
Then I connected the Prologix company. they said:
Prologix controllers are compatible with the Anristu meter. However they are not compatible with LabVIEW programs developed for controllers from other vendors. Bottom line is that Prologix controllers are not drop-in replacements for NI or Agilent controllers and any LabVIEW programs or drivers (VI) written for those controllers will not be compatible with our product. They will have to rewrite the programs.
Please see following frequently asked questions regarding LabVIEW compatibility:
http://prologix.biz/gpib-usb-6.0-faq.html#40
http://prologix.biz/gpib-usb-6.0-faq.html#50
http://prologix.biz/gpib-usb-6.0-faq.html#70
The question is, how to talk to this power meter using Prologix GPIB? Thanks!
From what I've Googled, it seems that all their interfaces are very difficult to use with LabVIEW. It would probably be cheaper in the long run to get a more standard GPIB interface. It may cost more initially, but the engineer-hours you put into trying to make the Prologix adapter work will make it quite expensive.
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@billko wrote:
From what I've Googled, it seems that all their interfaces are very difficult to use with LabVIEW. It would probably be cheaper in the long run to get a more standard GPIB interface. It may cost more initially, but the engineer-hours you put into trying to make the Prologix adapter work will make it quite expensive.
I completely agree. Just spend the $600 on the NI USB-GPIB. It just works. If you spend more than a day or two trying to get the Prologix one to work, you are already more expensive just due to your man-hours. Not to mention all of the frustrations you are enduring.
